Ramp Definition and 672 Threads

Homework Statement A runaway truck with a mass of 10,000 kg reaches an emergency pullout ramp moving at 90 mi/hr. As it plows through the deep sand spread over the pullout, it experiences a frictional force of 5000 Newtons opposing its motion. How high up the ramp will it rise? Note that 1...

Hey all, here's a question from one of my homework sets, any help is greatly appreciated.Homework Statement I've included a diagram of the situation. Basically, I have to find out how long it takes the block to reach the end of the ramp, the spring is massless, and friction is a factor in this...

Homework Statement A box is being pulled up a ramp with a force F. The ramp has a 30 degree incline with the horizontal. write the sum of the forces in the x direction and y direction. Make the x and y coordinate system be parallel and perpendicular with the ramp. The Attempt at a...

A 48 kg skier starts from rest at a height of H = 28 m above the end of the ski-jump ramp. As the skier leaves the ramp, his velocity makes an angle of 28° with the horizontal. Neglect the effects of air resistance and assume the ramp is frictionless. Could u give me a formula i need to start...

Homework Statement A 800 N box was pushed up an incline plane of length 4.0m (measured along the incline) to a window ledge 2.0m above ground level. This process required that 3200J of work be done. What was the average frictional force along the plane? Homework Equations W=Fd...

Homework Statement A horizontal 25 N pushing force acts on a 10 kg crate moving up a ramp. The ramp is inclined at 37 degrees above the horizontal. How much work is done by this force in moving the crate a distance of 15m along the ramp? Homework Equations W = Fd The Attempt at...

Homework Statement A 280kg piano slides 4.3 meters down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is .40. Calculate: a) The force exerted by the man. b) The work done by the...

Homework Statement In an ideal case of pulling a cart up a ramp where there is no friction should the efficiency be less than that of pulling a cart up a ramp with friction?Homework Equations W=F\DeltaXcos\theta Efficiency=(work output/work input)*100 The Attempt at a Solution I was trying to...

Homework Statement this isn't a homework problem, but i guess it's a basic enough question that i figured i'd post it here. okay, so I'm trying to figure out how big of a winch to buy for a very large tow truck i am building. winches are rated based on how much they can pull. eg. a...

Ok now my problem is this- Ignoring resistances (I'm factoring these in later), if a ball rolls down a ramp the initial GPE energy goes to KE. So the equation would be mgh=(1/2)mv*2 so mass cancels out leaving gh=(1/2)v*2 multiply by two gives 2gh=v*2. So I have plotted a graph of change...

Homework Statement A cabinet is pushed up a ramp at angle of 10 degrees. The cabinet weighs 100 kg. The friction coefficient is 0.30. What is the minimum applied force required to push the cabinet up the ramp? Calculate the time it takes to push the object up the ramp. The ramp is 15...

Homework Statement A block of m mass slides along a frictionless horizontal surface with a speed of v m/s. After sliding a distance of d, the block makes a smooth transition to a frictionless ramp inclined at an angle of theta ° to the horizontal. The ramp is not fixed to the frictionless...

Hi, I'm not quite getting this. Say we lift a block of weight 10N through a vertical height of 1 metre. So the work done is 10 x 1 = 10J. This 10J equals the g.p.e. Of the block. Now we pull the block up the same height of 1 metre but along a smooth, straight ramp (no friction between...

Homework Statement The table (below) shows the force needed to push a 10-kg box up a ramp as the angles increase. From the trend in the table, what is the applied force needed if the angle of the ramp increases to 50 degrees? Applied Force (N) ; Ramp Angle (Degrees)...

Homework Statement A block of mass m is initially at rest at the top of a ramp, inclined at angle θ to the horizontal. The coefficient of friction between the block and the ramp is µ. The ramp is now pushed at acceleration a to the right. For what range of value of a will the block start...

spherical shell rolls down a ramp with friction--time? Homework Statement A 120 g basketball has a 25.7 cm diameter and may be approximated as a thin spherical shell. Starting from rest, how long will it take a basketball to roll without slipping 6.29 m down an incline that makes an angle of...

Homework Statement A block is pushed up a frictionless incline by an applied horizontal force as shown. The acceleration of gravity is 9.8 m/s2 . What is the magnitude of the resulting acceleration of the block? Answer in units of m/s^2. Homework Equations...

Homework Statement A 200-g block is pressed against a spring of force constant 1.40 kN/m until the block compresses the spring 10.0 cm. The spring rests at the bottom of the ramp inclined at 60.0deg to the horizontal. Using energy considerations, determine how far up the incline the...

Homework Statement There's a block on a ramp. The block weighs 48.9 kg and the ramp's theta (the angle the ramp makes to the ground) is 45. Assumng gravity is 9.8 m/s^2, how would i find the force of the block parallell to the ramp?Homework Equations Um..maybe F=(mu)(m)(g) F=(mu)(normal force)...

Homework Statement When mass M is at the position shown, it is sliding down the inclined part of a slide at a speed of 2.19 m/s. The mass stops a distance S2 = 2.5 m along the level part of the slide. The distance S1 = 1.07 m and the angle θ = 29.70°. Calculate the coefficient of kinetic...

Homework Statement Two packages at UPS start sliding down the 20° ramp shown in Figure P8.25. Package A has a mass of 5.5 kg and a *coefficient of friction of 0.20. Package B has a mass of 10 kg and a coefficient of friction of 0.15. How long does it take package A to reach the bottom...

Work (done by gravity) --- pushing up a ramp Homework Statement A physics professor is pushed up a ramp inclined upward at an angle 28.0^\circ above the horizontal as he sits in his desk chair that slides on frictionless rollers. The combined mass of the professor and chair is 81.0 kg. He is...

Hey guys, I'm having difficulty with this problem. Any help would be appreciated! A block of mass m is placed against a compressed spring with spring constant k. When the spring is released, the block is launched up a ramp and across a chasm of width D. The ramp has a coefficient of...

Why is the magnitude of acceleration on a ramp greater on the way up than it is on the way down? I can't figure it out... I was thinking maybe it has something to do with the initial force applied to the cart on the way up the ramp? So that you know exactly what I mean: If I have a cart...

If an object is sliding down a frictionless ramp will the force on the object by the ramp just be 0? or will it be equal to the normal force? Thanks :smile:

Coefficient of Friction of object sliding down ramp.. need help! Homework Statement An 10.0kg object slides down an inclined plane that is 10.0m in length. THe height of the incline is 6.0m and the speed of the object at the bottom is 9.0 m/s. What is the coefficient of friction of this...

Homework Statement The problem is to find at what distance the ball has to be placed at on a ramp given a certain angle measurement of said ramp. The cup's position will be given a few minutes prior to testing so there are more unknown variables. Table Height: .73M Cup Height: 10cm Angle...

Homework Statement A sack of weight 600 N is being loaded on to a truck up a ramp inclined at 18o to the horizontal. A rope attached to the sack is held at an angle of 25o to the ramp. The coefficient of friction between the sack and the ramp is 0.3. What tension in the rope is needed: a. To...

[/tex]Homework Statement http://emweb.unl.edu/negahban/em223/sexam3/sexam3.htm" number 3...the one about the semicylinder on a ramp Homework Equations \Sigma F_x = 0 \Sigma F_y = 0 \Sigma M=0 f = \mu * N The Attempt at a Solution I got the first part to be 16.7 degrees. However...

Homework Statement The Lower Machiavellian Space Shuttle, having a total mass of 3500kg, is about to make its' debut launch. Rather then using a rocket engine to launch the shuttle, the Machiavellianans' use a large compressed spring, having a spring constant of 1600N/m. If the spring can be...

A car drives down a ramp onto the back of a moving lorry. Both are moving at high speed, the car slightly faster than the lorry. The car has mass 1250 kg and is moving at a speed of 28.0 m s–1. The lorry has mass 3500 kg and a speed of 25.5 m s–1. The length of the flat back of the lorry...

Homework Statement A ball is placed 0.700m from the end of a declining ramp and rolls down the ramp in 0.750s. The marble is also 0.175m from the horizontal. The ball hits a mark on the floor that is 1.70m from the bottom of the ramp on the x-axis. What mount of time is the ball in the air...

Homework Statement The toy car has been placed on an inclied ramp facing downward. angles are as follows 10degrees , 12 degrees , 14 degrees , 16degrees , 18 degrees, 20 degrees. after acceleratin down the ramp for 15cm, the car continues on a leveled plane. between which consecutive...

Homework Statement http://online.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?courses/phys211/oldexams/exam2/fa08/fig5a.gif A frictionless ramp of mass 3m is initially at rest on a horizontal frictionless floor. A small box of mass m is placed at the top of the ramp and then...

So I did a lab experiment and found out that the higher the angle, the more efficient the ramp is, and just curious, does anyone know the reason for this? Any info provided would be greatly appreciated.

Hi! This is my first post, so if I do anything incorrectly I apologize :redface: Homework Statement A block of wood slides first down and then up a ramp inclined at 25°. Assume the block/ramp kinetic friction coefficient = 0.2. The block starts from rest at position located 3.2 m up...

A barrel of oil with a mass of 65 kg is rolled down a 1.2 m ramp. Due to a constant force exerted on it, the barrel reaches a velocity of 4.2 m/s just on leaving the ramp. Find the constant force on the barrel while it is on the ramp and express your answer in the form of a sentence relating...

Homework Statement A hollow ball goes down a frictionless ramp. The ball starts at a height of 5 m. The ball has a radius of 4 cm and a mass of 0.5 kg. (a) What is the final velocity of the ball at the ball at the bottom of the ramp if it just slides down the ramp to a final height of 0...

Homework Statement A bike is jumping between two ramps. The ramps are a height H , both with angles \theta and separated by a distance D. If he landed halfway down the landing ramp find the speed at which he left the launching ramp in terms of H, \theta and D. Homework Equations 1/2...

Homework Statement The suspended 2.3 kg mass on the right is moving up, the 2.4 kg mass slides down the ramp, and the suspended 7.2 kg mass on the left is moving down. There is friction between the block and the ramp. The acceleration of gravity is 9.8 m/s2. The pulleys are massless and...

Homework Statement What is the minimum horizontal force that must be applied to the stationary 4.0kg block so that the block will start to slide up the ramp? the ramp is inclined at a 37degrees angle and the coefficient of static friction between the block and the ramp is 0.23. Homework...

Homework Statement I am doing a practice problem out of the textbook in order to improve my skills. The problem states the following: A free-rolling ramp has a weight of 120 lb. If the 80-lb crate is released from point A (top of the ramp), determine the distance the ramp moves when the crate...

Homework Statement here is the problem: skater is to roll down a ramp with a 35 degree angle from horiziontal. the ramp then levels off to horizontal, with a 4 foot drop to level ground. the winner is the skater who can jump the furthest after leaving the ramp. your task is to determine the...

Homework Statement Imagine a ramp on a 30deg incline with a 1kg mass on top of it. mu kinetic coefficient is .25 between the mass and the ramp. A person applies a horizontal force of 10N to the 1kg mass on the incline ramp opposite to the direction of acceleration. What is the normal force...

Well these two problems were from my quiz, and if I don't find out how to solve them soon, I'm going to spend my whole weekend thinking about them. D8 I'll try to remember the problems as best I can. 1) An astronaut is in space, in the midpoint of two stars that have the same mass. If all...

[SOLVED] Block released from spring slides up a ramp Homework Statement Homework Equations I'm thinking conservation of energy: K1+U1+WOther=K2+U2 But really I'm not quite sure where to start here. The Attempt at a Solution So far, I've calculated the velocity of the block after...

I have just done this experiment where i have a cart roll down a ramp and a ticker tape timer does its ticks on a tape atached to the cart. already i can make a postion (or displacement from a dot of reference)- time table. for 1.0 second going down the ramp i all ready have finished the...

Homework Statement A frictionless ramp of mass 3m is initially at rest on a horizontal frictionless floor. A small box of mass m is placed at the top of the ramp and then released from rest. After the box is released, it slides down the ramp and onto the horizontal floor, where it is...

Hello! First time, long time! This is kind of a long post. I did what I could to keep it clear. TYIA! I was marked totally wrong on a test question and I think I may have been correct. I'm trying to get my ducks in a row before I ask the professor to review this with/for me. Everyone in the...

Homework Statement You are designing a delivery ramp for crates containing exercise equipment. The crates of weight 1480 N will move with speed 2.1 m/s at the top of a ramp that slopes downward at an angle 23.0 degrees. The ramp will exert a 578 N force of kinetic friction on each crate, and...